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Finding the Fourth Proportional to 239,640.36, 359,447.58 and 73,428.84

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Solution

The fourth proportional to 239,640.36, 359,447.58 and 73,428.84 is: 110,139.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,640.36 : 359,447.58 = 73,428.84 : x
  2. Step 2: Convert to fraction form
    239,640.36/359,447.58 = 73,428.84/x
  3. Step 3: Cross multiply
    239,640.36x = 359,447.58 × 73,428.84
  4. Step 4: Simplify right side
    239,640.36x = 26,393,818,840.21
  5. Step 5: Solve for x
    x = 26,393,818,840.21/239,640.36
  6. Step 6: Final answer
    x = 110,139.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.